[unreal] add MakeConstVariable

Tencent · Oct 18, 2024 · cf539a8 · cf539a8
1 parent c0025f7
commit cf539a8
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Showing 2 changed files with 22 additions and 0 deletions.
diff --git a/unreal/Puerts/Source/JsEnv/Public/ScriptBackend.hpp b/unreal/Puerts/Source/JsEnv/Public/ScriptBackend.hpp
@@ -36,6 +36,9 @@
         ::PUERTS_NAMESPACE::PropertyWrapper<PUERTS_NAMESPACE::PUERTS_BINDING_IMPL::API, decltype(M), M>::info()
 #define MakeVariable(M) MakeProperty(M)
 #define MakeReadonlyVariable(M) MakeReadonlyProperty(M)
+#define MakeConstVariable(M)                                                                                          \
+    &(::PUERTS_NAMESPACE::ConstVariableWrapper<PUERTS_NAMESPACE::PUERTS_BINDING_IMPL::API, decltype(M), M>::getter), nullptr, \
+        ::PUERTS_NAMESPACE::ConstVariableWrapper<PUERTS_NAMESPACE::PUERTS_BINDING_IMPL::API, decltype(M), M>::info()
 #define MakeFunction(M, ...)                                                                                                    \
     [](::PUERTS_NAMESPACE::PUERTS_BINDING_IMPL::API::CallbackInfoType info)                                                     \
     {                                                                                                                           \

diff --git a/unreal/Puerts/Source/JsEnv/Public/StaticCall.hpp b/unreal/Puerts/Source/JsEnv/Public/StaticCall.hpp
@@ -1457,6 +1457,25 @@ struct PropertyWrapper<API, Ret*, Variable>
         return CTypeInfoImpl<Ret, false>::get();
     }
 };
+template <typename API, typename Ret, Ret Variable>
+struct ConstVariableWrapper
+{
+    template <typename T>
+    using DecayTypeConverter = typename API::template Converter<typename internal::ConverterDecay<T>::type>;
+
+    static void getter(typename API::CallbackInfoType info)
+    {
+        auto context = API::GetContext(info);
+        API::SetReturn(info, DecayTypeConverter<Ret>::toScript(context, Variable));
+    }
+
+    static void setter(typename API::CallbackInfoType info) { }
+
+    static const CTypeInfo* info()
+    {
+        return CTypeInfoImpl<Ret, false>::get();
+    }
+};
 
 template <typename T, typename API, typename RegisterAPI>
 class ClassDefineBuilder